结构大修改，改成朴实无华的结构，不过度架构。能跑就行

Assets/Scripts/NBC/Asset/Runtime/Tasks/Unpack/UnpackPackagesTask.cs

@@ -0,0 +1,29 @@
+namespace NBC.Asset
+{
+    /// <summary>
+    /// 解压资源包任务
+    /// </summary>
+    public class UnpackPackagesTask : NTask
+    {
+        private readonly ParallelTaskCollection _taskList = new ParallelTaskCollection();
+
+        public override float Progress => _taskList.Progress;
+
+        protected override void OnStart()
+        {
+            _taskList.ParallelNum = 5;
+            var bundles = Addressable.GetCanUnpackBundles();
+            foreach (var bundle in bundles)
+            {
+                _taskList.AddTask(new UnpackFileTask(bundle.Bundle.NameHash));
+            }
+
+            _taskList.Run(TaskRunner.Def);
+        }
+
+        protected override NTaskStatus OnProcess()
+        {
+            return _taskList.IsDone ? NTaskStatus.Success : NTaskStatus.Running;
+        }
+    }
+}